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i have no idea, please help!


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nir9109
New User

Jul 4, 2013, 12:35 PM

Post #1 of 6 (1186 views)
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(I Apologize That Everything Is In Caps, Don't Know Why My Phone Does It)
Lets Begin With My Car Is A 2005 Ford 500(All I Know Abou It), I Had Let A Friend Borrow My Car, When I Got It Back.And Was Driving Home My Car Was Reiking Of Gasoline And My Gas Was DroppIng. Get Off The Highway And Hear Gas Just Pouring Out. It Took Over 1000 For AUsed Gas Tank And To Get It Fixed. Drove Fine FOr A Couple Weeks, Was Down Visiting My Parents When My Car Like Jumps The Rpm Went Up But The Car WaSnt Moving. My Parents Replaced The FueL Pump.. Drives Fine For A Few Months Then All Of A Sudden My Car JerksWhile On Highway. We GoTo Orriellys My Car Has No Balls WhenApplying Gas. They Say Its The Emissions Evap Or Somethinf, But That It Wouldnt EffecT My Car. On Way Home Car Dies On Side Of Highway. It Starts Fine, And Runs Fine For A Bit On Cooler Days, On Hotter Days, Forget About It. Dies Constantly Absolutely No Balls, And Gas Start.Dropping, Also Everytime I Start It It Loooses A Mile. Took It In To Another Car Place In Town They Say Ita The MAF. Running Too Lean. Took It Into Mechanic To Take A Look. Charges 70 For Fuel Filter (Which My Parents Didn't Tell Me Till After He Changed It That They Changed It When Changing Fuel Pump.) So We TaKe Out MAF Clean It. Still Doesnt Work.. Going To Get It Tested To See If The Sensor Is Bad.. Did A Little Bit Of.research On Things ThatCause Car.To Run Too Lean, But I Still Have 41Hundred To Pay On This Car, I Cant Afford PayiG Money I Dont Have For Things That Wont Fix My Car. Can Anyone Please Help? My Boyfriend And I Are To The Point Where We Are Rrying To Figure It Out On Our Own Without A Mechanic And I Just Feel AbsolutelyLost.


Hammer Time
Ultimate Carjunky / Moderator
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Jul 4, 2013, 12:44 PM

Post #2 of 6 (1180 views)
Re: i have no idea, please help! Sign In

Is the check engine light coming on at all? If so, get the codes read and post the numbers here.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



nir9109
New User

Jul 4, 2013, 1:16 PM

Post #3 of 6 (1167 views)
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Yes The Engine Is On. And As I Said,The Code That Came Up Was The Maf Too Lean. P0171 And P0174. We Just Unplugged It Drove Around And Ofc STill A Bit Of.trouble But Drove Better And Didn't Die On Me Like It Normally Does, So Now We're Pretty Positive ThaT It Is The Maf.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 4, 2013, 1:22 PM

Post #4 of 6 (1148 views)
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No, those codes don't mean the MAF is too lean. They mean the computer has attempted to correct a lean mixture situation and has reached it's adaptive limits. Nothing says the MAF is the cause.

On a Ford, nine out of ten times it's due to a severe vacuum leak. Check all ther rubber connectors and hoses, especially feeding the PCV valve.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



nir9109
New User

Jul 4, 2013, 2:40 PM

Post #5 of 6 (1124 views)
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When We Took It Into The Mechanic, He Gave Me Those Codes Again, Then Said The MAF Was Bad And That The Evap Emissions Sensor Is Bad Also, And If It Isn't The Maf, Then Why Is My Car Driving Better Without Plugged In Then When It Is Plugged In? Just Curious Cause That Confuses Me.


Discretesignals
Ultimate Carjunky / Moderator
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Jul 4, 2013, 3:17 PM

Post #6 of 6 (1116 views)
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The computer is able to use back up strategies when the MAF is unplugged. It substitutes numbers based off the TPS and engine rpm if it loses the MAF input.

Your right. Usually, if it runs better with it unplugged, then that is an indicator of a MAF issue. The MAF should still be tested because the MAF also needs power, ground, and good input circuit to the PCM to function correctly.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Jul 4, 2013, 3:18 PM)






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